I think, but not certain, that it can be applied to many venomous creatures as nature repeats those colors across the animal kingdom, many of them being venomous. My grandpa taught me about it as I used to find snakes as a girl and we lived in the country.

It's a unique subject matter for artists to use as a tradition reference or in digital photomanipulations. It's useful Stock photos are rated more for their creativity, usefulness, etc., rather than just their technical and artistic merits.

Stock photos are fine and dandy. Great! Share them! But a DD? :/ I always figured a DD should be the sort of inspirational/emotion-provoking/jealousy-inducing work whom would reduce any other artist to a primeval gasping form. Kind of like a flounder or a sea slug.